Accumulation and exportation of macronutrients in beet under different managements of fertigation and salinity

Autor: Silva, Alexsandro Oliveira da, Franca e Silva, Enio Farias de, Klar, Antonio Evaldo [UNESP]
Přispěvatelé: Univ Fed Ceara, Univ Fed Ruaral Pernambuco, Universidade Estadual Paulista (Unesp)
Jazyk: portugalština
Rok vydání: 2017
Předmět:
Zdroj: Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 0006-8705
Popis: Made available in DSpace on 2018-11-26T17:28:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-01-01. Added 1 bitstream(s) on 2021-07-15T14:32:02Z : No. of bitstreams: 1 S0006-87052017000100125.pdf: 1186182 bytes, checksum: 59e3fde975b5b9b565a878d88bb0e977 (MD5) Fertigation is a major form of fertilizer installments; however, if applied in excess, the fertilizers can damage the crop development. The objective of this study was to evaluate the accumulation and exportation of macronutrients in a beet cultivation under 2 fertigation managements at different levels of soil salinity. The experiment was conducted in a greenhouse in the city of Botucatu, Brazil. The treatments consisted of the combination of soil salinity ( 1.0, 3.0, 6.0, 9.0 and 12.0 dSu m(-1)), fertigation management ( M-1 = traditional and M-2 = control of the ionic concentration), and varieties of beets ( C-1 = Early Wonder and C-2 = Itapua) in a 5 x 2 x 2 factorial design with 4 replications in randomized blocks. After harvest, it was determined the accumulation of macronutrients ( N, P, K, Ca, Mg, P, and S mgu plant(-1)). There was an increased accumulation of nutrients studied for both cultivars and fertigation managements until electrical conductivity levels between 3 ( M-1) and 6 ( M-2) dS.m(-1). The order of macronutrients exportation was different for the studied cultivars. The cultivar Early Wonder followed the following order: K > N > Ca > Mg > P > S, while, for the Itapua cultivar, the order was K > N > Mg > Ca > S > P. Univ Fed Ceara, Engn Agr, Fortaleza, Ceara, Brazil Univ Fed Ruaral Pernambuco, Engn Agr, Recife, PE, Brazil Univ Estadual Paulista, Fac Ciencias Agron, Engn Rural, Botucatu, SP, Brazil Univ Estadual Paulista, Fac Ciencias Agron, Engn Rural, Botucatu, SP, Brazil
Databáze: OpenAIRE
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